US5891593AExpiredUtility

Electrode materials suitable for lithium-ion electrochemical cells

Assignee: EMTEC MAGNETICS GMBHPriority: Oct 31, 1995Filed: Oct 22, 1996Granted: Apr 6, 1999

Est. expiryOct 31, 2015(expired)· nominal 20-yr term from priority

Inventors:Harald Keller Bernd Bronstert Helmut Steininger Gunter Heil Rainer Blum

H01M 4/60H01M 4/13H01M 4/621H01M 4/587H01M 4/622H01M 4/525Y02E60/10

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Claims

Abstract

Electrode materials suitable for electrochemical cells containing a) a polymeric binder which is composed essentially of polyisobutene having a limiting viscosity number of from 551 to 661 g/cm 3 and b) a solid which is capable of reversibly taking up or releasing lithium ions in an electrochemical reaction.

Claims

exact text as granted — not AI-modified

We claim: 
     
       1. A secondary lithium-ion electrochemical cell containing an electrode material I comprising a) a polymeric binder II which is composed essentially of polyisobutene having a limiting viscosity number of from 551 to 661 g/cm 3  and   b) a solid III which is capable of reversibly taking up or releasing lithium ions in an electrochemical reaction.   
     
     
       2. The cell as defined in claim 1, containing carbon as compound III. 
     
     
       3. The cell as defined in claim 1, containing, as compound III, a mixed oxide containing Mn, Co, Ni, Fe or Mo ions and lithium ions. 
     
     
       4. The cell as defined in claim 1, containing a polyether IV. 
     
     
       5. The cell as defined in claim 1 comprising an electrode containing the electrode material I.

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